Results 71 to 80 of about 70,485 (278)
Topological Materials and Related Applications
Advanced Electronic Materials, EarlyView.This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti +9 more
wiley +1 more source
Improved HLLL Lattice Basis Reduction Algorithm to Solve GNSS Integer Ambiguity
International Journal of Aerospace Engineering, 2023 Recently, lattice theory has been widely used for integer ambiguity resolution in the Global Navigation Satellite System (GNSS). When using lattice theory to deal with integer ambiguity, we need to reduce the correlation between lattice bases to ensure ...
Kezhao Li +3 more
doaj +1 more source
Single Epoch Ambiguity Resolution of Small-Scale CORS with Multi-Frequency GNSS
Remote Sensing, 2021 The network real-time kinematic (RTK) technique uses continuously operating reference stations (CORS) within a geographic area to model the distance dependent errors, allowing users in the area to solve ambiguities.
Shengyue Ji +5 more
doaj +1 more source
The impact of new signals on precise marine navigation - initial results from an experiment in Harwich Harbour [PDF]
, 2008 The General Lighthouse Authorities of the United Kingdom and Ireland (GLAs) are supporting a project at University College London (UCL) to study whether it is possible to meet the International Maritime Organisation’s (IMO) future requirements for port ...
Cross, PA, Grant, A, Parkins, AJ
core
Advanced Intelligent Systems, EarlyView.This study proposes a robust, generalizable new approach for facial type diagnosis. Based on landmark detection and pose normalization, a 94.7% diagnostic accuracy is achieved by Combined Heatmap Regression and Coordinate Regression network. This research makes the AI‐generated preliminary diagnosis more interpretable and reducing the impact of ...
Qianyang Xie +12 more
wiley +1 more source
Integer Ambiguity Resolution Algorithm Based On Different Baseline Method
DEStech Transactions on Computer Science and Engineering, 2018 Carrier phase observation can greatly improve the accuracy of navigation and positioning, but the existence of ambiguity will seriously affect the accuracy of the results. This paper analyzes the advantages and disadvantages of LAMBDA algorithm for integer ambiguity resolution. The problem of constructing search domain leads to long search time.
Shengge Zhang, Naiping Cheng, Shuyan Ni
openaire +2 more sources
Can Kinematic Diffraction Distinguish Order from Disorder? [PDF]
, 2009 Diffraction methods are at the heart of structure determination of solids. While Bragg-like scattering (pure point diffraction) is a characteristic feature of crystals and quasicrystals, it is not straightforward to interpret continuous diffraction ...
Baake, Michael, Grimm, Uwe
core +2 more sources
Modeling and parameter estimation for fractional large‐scale interconnected Hammerstein systems
Asian Journal of Control, EarlyView.Abstract This paper addresses the challenge of modeling and identifying large‐scale interconnected systems exhibiting memory effects, hereditary properties, and non‐local interactions. We propose a fractional‐order extension of the Hammerstein architecture that incorporates Grünwald–Letnikov operators to capture complex dynamics through multiple ...
Mourad Elloumi +2 more
wiley +1 more source
Improved GNSS Ambiguity Fast Estimation Reduction Algorithm
Sensors, 2023 The fast and accurate solution of integer ambiguity is the key to achieve GNSS high-precision positioning. Based on the lattice theory of high-dimensional ambiguity solving, the reduction time consumption is much larger than the search time consumption ...
Xinzhong Li +4 more
doaj +1 more source
Enumerative geometry of Calabi-Yau 4-folds
, 2007 Gromov-Witten theory is used to define an enumerative geometry of curves in Calabi-Yau 4-folds. The main technique is to find exact solutions to moving multiple cover integrals.
A. Katz +29 more
core +1 more source